Substruck Ltd. regularly completes hydrostatic drain tests in response to drainage or subsidence problems or as part of pre-purchase surveys.
Our Phase 1 reports document a non-destructive investigation of the drainage system using one or a combination of direct observation, hydrostatic testing, CCTV surveying / inspection and drain tracing techniques.
A hydrostatic drain test will verify effective performance of the drainage system to meets its service requirements with regards to water tightness. All newly installed drains should be subjected to such a test prior to and during backfilling of drains to assure compliance with Building Regulations.
During the test, pipelines will be filled with water under an approved test pressure for an approved conditioning period before recording for an approved time interval. The loss will be recorded and compared with the maximum permissible levels or acceptable rates as per WRc plc The Drain Repair Book – best practise manual for the inspection and repair of domestic and light industrial drains (2011), Technical Guidance Document H of the Building Regulations (2016) [post June 1 1992] or I.S. EN 1610: 1998 Construction and testing of drains and sewers, whichever is more applicable. The result will be used to reflect the performance of the pipelines against water leakage.